“…Historically, the most frequent treatments included 5‐fluorouracil, cisplatin, carboplatin, or paclitaxel, alone or in combination (Martinez, Otley, Okuno, Foote, & Kasperbauer, ). As second‐line treatment, frequently target therapies with epidermal growth factor receptors (EGFR) inhibitors (i.e., cetuximab) are used (Trodello, Pepper, Wong, & Wysong, ). Immunologic therapies are new therapeutic strategies, but they are usually prescribed off‐label (Conforti, Corneli, Harwood, & Zalaudek, ).…”